﻿// The MIT License(MIT)
//
// Copyright(c) 2021 Alberto Rodriguez Orozco & LiveCharts Contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

namespace LiveChartsCore.Motion;

internal class CanvasRenderSettings<TCPURenderMode, TGPURenderMode, TVSyncTicker>(
    IRenderMode? renderMode = null)
        where TCPURenderMode : IRenderMode, new()
        where TGPURenderMode : IRenderMode, new()
        where TVSyncTicker : IFrameTicker, new()
{
    private static bool? s_canUseGPU;

    public IRenderMode RenderMode { get; } = renderMode ??
        (LiveCharts.RenderingSettings.UseGPU && CanUseGPU()
            ? new TGPURenderMode()
            : new TCPURenderMode());

    public IFrameTicker Ticker { get; } = LiveCharts.RenderingSettings.TryUseVSync
        ? new TVSyncTicker()
        : new AsyncLoopTicker();

    public void Initialize(CoreMotionCanvas canvas)
    {
        RenderMode.InitializeRenderMode(canvas);
        Ticker.InitializeTicker(canvas, RenderMode);
        RenderMode.FrameRequest += canvas.DrawFrame;
    }

    public void Dispose(CoreMotionCanvas canvas)
    {
        RenderMode.DisposeRenderMode();
        Ticker.DisposeTicker();
        RenderMode.FrameRequest -= canvas.DrawFrame;
        canvas.Dispose();
    }

    internal static bool CanUseGPU()
    {
        if (s_canUseGPU.HasValue)
            return s_canUseGPU.Value;

        try
        {
            var renderer = new TGPURenderMode();
            renderer.DisposeRenderMode();

            s_canUseGPU = true;

            return true;
        }
        catch
        {
            s_canUseGPU = false;
            LiveCharts.RenderingSettings.UseGPU = false;

            return false;
        }
    }
}
